It can be confusing, Rick, and fustrating too because there are so many ways to measure light and each gives a different numerical value as a result. Fortunately, there are conversion tables for one to another, etc. I don't have any practical user experience with LED, having never used them for plants or seedlings, but one of the disadvantages I can imagine would be the distance above the leaves would be quite fussy and less forgiving than a fluorescent along with a lot of sharp shadows. Actually, I think we've got it pretty good with the flexibility of the current T5's, T8's, etc. with a triple phosphor system that gives a full daylight spectrum, a good red zone and a good blue zone. I think they're pretty forgiving in terms of distance vs. intensity at the leaf canopy.
I just finished watching the movie "Grumpy Old Men" (again). Had to get away from lilies for a couple hours.
I see Wabasha still had the welcome sign up last summer: "Welcome" "Home Of Grumpy Old Men" . Great show--Nice town.
